Vulnerability-Lookup

GHSA-3J3G-6R9W-9PC8

Vulnerability from github – Published: 2024-08-21 09:31 – Updated: 2024-09-06 15:32

Details

In the Linux kernel, the following vulnerability has been resolved:

misc: fastrpc: Fix use-after-free race condition for maps

It is possible that in between calling fastrpc_map_get() until map->fl->lock is taken in fastrpc_free_map(), another thread can call fastrpc_map_lookup() and get a reference to a map that is about to be deleted.

Rewrite fastrpc_map_get() to only increase the reference count of a map if it's non-zero. Propagate this to callers so they can know if a map is about to be deleted.

Fixes this warning: refcount_t: addition on 0; use-after-free. WARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate ... Call trace: refcount_warn_saturate [fastrpc_map_get inlined] [fastrpc_map_lookup inlined] fastrpc_map_create fastrpc_internal_invoke fastrpc_device_ioctl __arm64_sys_ioctl invoke_syscall

Severity

7.0 (High)


                  
                    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48872"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-21T07:15:04Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix use-after-free race condition for maps\n\nIt is possible that in between calling fastrpc_map_get() until\nmap-\u003efl-\u003elock is taken in fastrpc_free_map(), another thread can call\nfastrpc_map_lookup() and get a reference to a map that is about to be\ndeleted.\n\nRewrite fastrpc_map_get() to only increase the reference count of a map\nif it\u0027s non-zero. Propagate this to callers so they can know if a map is\nabout to be deleted.\n\nFixes this warning:\nrefcount_t: addition on 0; use-after-free.\nWARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate\n...\nCall trace:\n refcount_warn_saturate\n [fastrpc_map_get inlined]\n [fastrpc_map_lookup inlined]\n fastrpc_map_create\n fastrpc_internal_invoke\n fastrpc_device_ioctl\n __arm64_sys_ioctl\n invoke_syscall",
  "id": "GHSA-3j3g-6r9w-9pc8",
  "modified": "2024-09-06T15:32:56Z",
  "published": "2024-08-21T09:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48872"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/079c78c68714f7d8d58e66c477b0243b31806907"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/556dfdb226ce1e5231d8836159b23f8bb0395bf4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61a0890cb95afec5c8a2f4a879de2b6220984ef1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96b328d119eca7563c1edcc4e1039a62e6370ecb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b171d0d2cf1b8387c72c8d325c5d5746fa271e39"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-48872 (GCVE-0-2022-48872)

Vulnerability from cvelistv5 – Published: 2024-08-21 06:10 – Updated: 2026-08-05 08:52

Title

misc: fastrpc: Fix use-after-free race condition for maps

Summary

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix use-after-free race condition for maps It is possible that in between calling fastrpc_map_get() until map->fl->lock is taken in fastrpc_free_map(), another thread can call fastrpc_map_lookup() and get a reference to a map that is about to be deleted. Rewrite fastrpc_map_get() to only increase the reference count of a map if it's non-zero. Propagate this to callers so they can know if a map is about to be deleted. Fixes this warning: refcount_t: addition on 0; use-after-free. WARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate ... Call trace: refcount_warn_saturate [fastrpc_map_get inlined] [fastrpc_map_lookup inlined] fastrpc_map_create fastrpc_internal_invoke fastrpc_device_ioctl __arm64_sys_ioctl invoke_syscall

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 16:05 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/556dfdb226ce1e523…
https://git.kernel.org/stable/c/b171d0d2cf1b8387c…
https://git.kernel.org/stable/c/61a0890cb95afec5c…
https://git.kernel.org/stable/c/079c78c68714f7d8d…
https://git.kernel.org/stable/c/96b328d119eca7563…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < 556dfdb226ce1e5231d8836159b23f8bb0395bf4 (git) Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < b171d0d2cf1b8387c72c8d325c5d5746fa271e39 (git) Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < 61a0890cb95afec5c8a2f4a879de2b6220984ef1 (git) Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < 079c78c68714f7d8d58e66c477b0243b31806907 (git) Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < 96b328d119eca7563c1edcc4e1039a62e6370ecb (git)
Linux	Linux	Affected: 5.1 Unaffected: 0 , < 5.1 (semver) Unaffected: 5.4.230 , ≤ 5.4.* (semver) Unaffected: 5.10.165 , ≤ 5.10.* (semver) Unaffected: 5.15.90 , ≤ 5.15.* (semver) Unaffected: 6.1.8 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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        "metrics": [
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                "id": "CVE-2022-48872",
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                "timestamp": "2024-09-10T16:05:25.671974Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-3J3G-6R9W-9PC8

CVE-2022-48872 (GCVE-0-2022-48872)

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